Safety butthook



. 1,523,765 J. E. .GILCHRIST SAFETY BUTT H6OK Filed Aug. 28, 1924 JZIEzZmrzfsZ Patented Jan. 20, 1925.

PATENT QFFlCE.

JOHN E. GILCHRIST, OF SOUTH BEND, NASHINGT0N.

SAFETY BUTTHOOK.

Application filed August 28, 1924. Serial No. 734,688.

To all whom it may concern:

Be it known that 1, JOHN E. Grnonnrs'r, a citizen of the United States,residing at- South Bend, in the county of Pacific and State ofWashington, have invented a new and useful Safety Butthook, of which thefollowing is a specification.

This invention relatesto butthooks such as are used in logging and otheroperations and the object thereof is to provide a hook of this characterconstructed for attaching or detaching choker cables and preventing themfrom becoming accidentally detached while in use.

Another object ot the invention is; to provide a hook of this characterhaving simple and eflicient means for locking it in operative position.a

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed may be made within thescope of what is claimed without departing from the spirit of theinvention.

In the accompanying drawings Figure 1 represents a side elevation of ahook embodying this invention, shown in closed operative position infull lines with the plunger or closing element open in dotted lines;

Fig. 2 is a similar view with parts broken out and in section to showthe construction of the locking plunger or'bolt; and

Fig. 3 is a transverse section taken on the line 33 of Fig. 2.

While the hook constituting this invention is primarily intended forlogging purposes obviously it may be used wherever a hook provided withmeans for preventing it from becoming accidentally unhooked can be usedto advantage. This hook comprises the usual body member 1. having aninturned substantially parallel bill 2 with a reduced. cylindricalterminal 3 provided at its base with a shoulder l, said terminal beingdesigned to enter a socket in a locking bolt presently to be described.

The opposite end of the body member 1 has an opening 5 for connection ofthe chain, not shown and extending laterally in ad vance of this openingis an arm 6 having a bore 7 extending longitudinally therethrough inwhich is mounted to slide a plunger or locking bolt 8. This bolt 8 is ofa length sufficient to span the distance between the bill at and the arm6 and has a socket 9 at its front end to receive the reduced terminal 3of said bill. An annular rib or flange 10 is carried by the socketed endof the plunger 8 and is designed to prevent the bolt or plunger fromdropping out of the bore 7 when the bolt is retracted. A spring pressedlocking plunger or pin 11 forms a thumb latch mounted to movetransversely of the plunger 8 it being shown here housed in a bore 18extending transversely through said plunger 8 and which is reduced atits outer end for the passage of the latch 11 which has an annularflange 12 at its inner end to engage a shoulder at the outer end of thebore 13 for limiting the outward movement of said. latch. it screw 14closes the other end of the bore 13 and forms an abutment for the spring15, the other end of which engages the enlarged head of the latch 11.This spring exerts its tension to normally force the latch 11 outwardinto locking position so that when the bolt or plunger 8 is closed thislatch will abut the inner face of the arm 6 and lock said bolt inoperative position. To retract the bolt or plunger 8 the latch 11 isdepressed to permit the bolt to be slid into the bore 7 and the pressureof the latch 11 against the wall of said bore will operate to hold theplunger 8 in adjusted position. The flange 10 not only forms a stop forpreventing the bolt or plunger from falling out but also affords afinger grip for moving the bolt into retracted position.

i The screw 1 1, the head of which is countersunk in the plunger 8,ZlfiOl'ClS access to the spring 15 located in the bore 13 for renewaland repairs when necessary and also permits the replacement or removalof the latch 11.

I claim 1. A hook of the class described comprising a bill and an armarranged opposite each other and spaced apart, a locking bolt carried byone of said members to span the space between them, said bolt and theother member having interlocking elements to engage when the bolt isclosed, and a spring projected latch arranged transversely in the boltto engage the other member to lock the bolt in closed position.

2. A book of the class described compris ing a body member having aninturned bill: and an integraldaterally extending arm' ar-- rangedopposite each other and spacedapart, said bill having a. reducedterminal with a shoulder at its base, a bolt mounted to slide in saidarm, and having a socket at its -;in-

oppositeeach otherand spaced apart, said bill having a reduced terminalwith a shoulder at Its base, a bolt mounted to slide; insaldarm'andhavlng a socket'atuts'inne-r end utoreceive :the terminal ofsaid bill, and

a spring pressed latch operating transversely of saidbolt to engage andextendlng transversely ofthe inner end er the arm when the bolt is: its:projected position andlock the bolt in such position, and a stop Qcarried by bolt for 'preventing 'it' from 1 slipping out of the arm whenin' retracted position:

4. A" hookof the class described i compris ing a'body 1nember having aninturn'ed bill at one end spaced laterally there-froin 'and' alaterallyextending arm at the other end aligning? with said bill, and spacedtherefrom said arm having a longitudinally extending bore, a plungermounted to slide in said bore. and close the space between said ar-m-andbill, interlocking elements carried by said plunger and bill to engagewhen the bolt isclosed, and a latch operating in a plane transversely tothe plane of movement of the bolt and adapted to engage the inner end'ofthe arm transversely to lock the bolt in operative position 5. A hookhaving a bill with a reduced terminal provided with a shoulder at itsbase, a slid-ablymounted bolt operating opposite said bill and inlongitudinal alinement therewith, means for locking said bolt in closedposition, and a combined stop and finger grip-carried by said bolt toprevent its accidental"disengagement from the hook and to facilitate theadjustment thereof.

In testimony that I claim the foregoing as my own, I have hereuntoafiixed my signature inthe presence of two witnesses.

JOHN E. GILCHRIST. lVitnesses IRENE F. KELLNER; J OHN" H. ACKLEY.

Jill

